Hard Engineering: Heysham an Morecambe Flashcards
(36 cards)
What council is in charge of this coastline?
Lancashire County Council
How far does the coastline stretch?
The coastline stretches 8.5km.
What are the current sea defences on the coastline a result of?
They are result of a comprehensive improvement scheme.
How many phases were in this comprehensive improvement scheme?
It was a 7-phase programme.
When did the programme take place?
It took place between 1989 and 2007.
How much did the scheme cost?
£28million.
What type of management methods does the scheme use?
It is a mix of traditional hard engineering strategies and also more contemporary methods to help improve the potential for sustainable development.
What has been used to enhance and protect the sea wall?
Rock armour
What is the rock armour made of?
It is made of locally sourced limestone.
Where was the rip rap placed?
It was placed along the majority of sea walls and promenade, from the western end of the promenade to about 1km east of the town centre.
What was the average weight of the boulders in the rip rap?
3.5 tonnes.
What was the total weight of the rock armour installed?
436,000 tonnes.
How many breakwaters/rock groynes were built?
Around 10.
Where were the breakwaters/groynes built?
They were built at intervals in front of the town.
What type of breakwaters were used?
A number of fish-tail break waters were used.
How many tonnes of locally sourced limestone were used for the breakwaters and groynes?
Just under a million tonnes.
What was repaired and reinforced and covered most of the length of the promenade?
The traditional concrete, recurved sea walls were repaired and reinforced.
When did further improvements and repair of the traditional recurved sea wall begin?
It began in 2015.
Where were the gabions placed?
They were placed in various locations along the coastline.
How many gabion cages were used?
500
What were the dimensions of the gabion cages?
2x1x1m
What were the gabion cages filled with?
They were filled with small limestone boulders.
What was repaired to the west of Heysham Head and extended to the port and nuclear power station?
The existing sea wall and revetments were repaired and left in place.
What is Morecambe Bay’s classification?
It is a SSSI and a SAC.
